The National Energy Board has asked Kinder Morgan to file more information of the feasibility of its proposal to twin the Trans Mountain pipeline from Alberta to its terminal in Burnaby.

The company will also have an extension until February, 2015 to file the information.

The NEB made its request following the company’s plan to reroute four kilometres of the pipeline through Burnaby Mountain instead of another right to the south of it.

“In its 10 June response, the company indicated that its preferred route for its delivery lines to the Westridge Marine Terminal would run through Burnaby Mountain,” said the NEB in a statement. “Trans Mountain also stated that additional studies were needed and that these studies should be completed by 1 December 2014.”

During the last few weeks, municipal governments have said they are not satisfied with the response the company gave to questions about the project and Burnaby has rejected it.

Opponents of the pipeline are concerned about the possibility of oil spills along the route and in Burrard Inlet, and the increase in tanker traffic through the area.